08-07-2020, 04:24 PM
Hi.
I recently received a Pye B16T from a friend in Poland for restoration.
The set was heavily rusted when he bought it and he has done a very good job in cleaning up the chassis. The bodger has been busy with this set and the line transformer has been wired in with twisted wires insulated with sellotape
The frame output transformer has an open circuit primary, also the frame blocking TX seemed to have an open winding but in fact one connection was never soldered and it gave me a false reading. The line scan transformer also reads wrong so it looks like shorted turns. It will be removed tomorrow and I'll ring it on the scope before I send it off to get rewound if needed.
The CRT is in a separate cardboard box with the scan coils that are well and truly stuck to the CRT neck, A few milliamps fed through the windings to warm it up should release it from the CRT, often loosening the screws on the coil body works too.
I've Started on the RF section and have replaced some caps and perished wiring, I'm giving it a couple of hours a day, I'd suspect I could take about a month. I'll provide regular updates.
Fortunately the mains transformer appears as OK. The chassis will remain on the bench as there is a 250watt greenhouse tubular heater mounted underneath it, this works well for driving out moisture.
I recently received a Pye B16T from a friend in Poland for restoration.
The set was heavily rusted when he bought it and he has done a very good job in cleaning up the chassis. The bodger has been busy with this set and the line transformer has been wired in with twisted wires insulated with sellotape
The frame output transformer has an open circuit primary, also the frame blocking TX seemed to have an open winding but in fact one connection was never soldered and it gave me a false reading. The line scan transformer also reads wrong so it looks like shorted turns. It will be removed tomorrow and I'll ring it on the scope before I send it off to get rewound if needed.
The CRT is in a separate cardboard box with the scan coils that are well and truly stuck to the CRT neck, A few milliamps fed through the windings to warm it up should release it from the CRT, often loosening the screws on the coil body works too.
I've Started on the RF section and have replaced some caps and perished wiring, I'm giving it a couple of hours a day, I'd suspect I could take about a month. I'll provide regular updates.
Fortunately the mains transformer appears as OK. The chassis will remain on the bench as there is a 250watt greenhouse tubular heater mounted underneath it, this works well for driving out moisture.
